M333 ISOPLAST Steel

Steel name: M333 ISOPLAST
Diagram No.: 2265
Chemical composition in weight %: 0.24% C, 0.20% Si, 0.35% Mn, 13.25% Cr, +N, Mo, V, Ni
Steel group: Plastic mould steels
Properties: BÖHLER’S M333 ISOPLAST plastic mould steel has been developed to fulfill just this requirement and offers tool makers the uncomplicated manufacture of high-gloss surfaces at low costs.
Applications: Whether a high-gloss surface meets all the optical requirements strongly depends on the tool’s features and qualities. Impurities in the tool steel inexorably appear in the final product. High-gloss surfaces can only be achieved with highpurity metallurgical tool steels.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: 980 to 1000 °C (1796 – 1832 °F), quick quenching as possible, Lambda < 10. 980 °C (1796 °F) are strongly recommended for large moulds (relevant thickness > 80 mm and vacuum N2-cooling). Holding time: 15 – 30 minutes after temperature equalisation.
Tempering: Tempering should be done directly following hardening. Tempering 3 times is recommended. Holding time in the furnace 1 hour per 20 mm material thickness, at least 2 hours in any case.
Diagram note: No data

Tempering Diagram

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